
// 星期格式转换 0-6：周日到周六
export function weekFormat(e, prefix = "周") {
  switch (e) {
    case 0:
      return prefix + "日"
      break;
    case 1:
      return prefix + "一"
      break;
    case 2:
      return prefix + "二"
      break;
    case 3:
      return prefix + "三"
      break;
    case 4:
      return prefix + "四"
      break;
    case 5:
      return prefix + "五"
      break;
    case 6:
      return prefix + "六"
      break;
    default:
      return ""
      break;
  }
}
// 转换今日的时辰格式
export function todayTimeFormat(e) {
  if (e >= 0 && e < 7) {
    return "凌晨"
  } else if (e >= 7 && e < 11) {
    return "上午"
  } else if (e >= 11 && e < 13) {
    return "中午"
  } else if (e >= 13 && e < 18) {
    return "下午"
  } else if (e >= 18 && e < 24) {
    return "晚上"
  } else {
    return ""
  }
}

// 是否显示周几
export function isShowWeekDay(sub, weekDay) {
  const currentWeekDay = new Date().getDay()
  const dayTime = 1000 * 60 * 60 * 24
  // 1.当前时间与消息时间相差必须大于2天小于7天
  // 2.当前时间距离本周一相差必须大于2天且小于当前距离周一的天数
  // 3.消息时间不可能是0-周日，因为周日没有给后面时间留空间，不会走这里的逻辑，而是走今天的逻辑
  if (sub >= dayTime * 2 && weekDay !== 0 &&  sub <= dayTime * currentWeekDay) {
    return true
  } else {
    return false
  }
}


// 仿微信时间显示格式转换 @time 时间戳毫秒
export function weChatTimeFormat(time) {
  const today = new Date().getTime()
  // 当前时间减去获取到的时间
  const sub = today - time
  const day = 1000 * 60 * 60 * 24
  const timeDate = new Date(time)
  const currentYear = new Date().getFullYear()
  const getYear = new Date(time).getFullYear()
  const HHmm = `${formatTime2("hh", timeDate)}:${formatTime2("mm", timeDate)}`
  const showWeekDay = isShowWeekDay(sub, timeDate.getDay())
  if (currentYear > getYear) {
    // return `${formatTime2("yyyy年MM月dd日", timeDate)} ${todayTimeFormat(timeDate.getHours())} ${formatTime2("hh:mm", timeDate)}`
	return `${formatTime2("yyyy年MM月dd日", timeDate)}`
	
  } else if (showWeekDay) {
    return `${weekFormat(timeDate.getDay())} ${HHmm}`
  } else if (sub > day && sub < day * 2) {
    return `昨天 ${HHmm}`
  } else if (sub <= day) {
    return HHmm
  } else {
	return `${formatTime2("MM月dd日", timeDate)} ${todayTimeFormat(timeDate.getHours())} ${formatTime2("hh:mm", timeDate)}`
  }
}


//时间格式化兼容 ios
export function formatTime2(fmt, timestamp) {
  var date = new Date(timestamp) // 兼容safari
  var o = {
    'M+': date.getMonth() + 1,
    'd+': date.getDate(),
    'h+': date.getHours(),
    'm+': date.getMinutes(),
    's+': date.getSeconds(),
    'q+': Math.floor((date.getMonth() + 3) / 3),
    'S': date.getMilliseconds()
  }
  if (/(y+)/.test(fmt)) {
    fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
  }
  for (var k in o) {
    if (new RegExp('(' + k + ')').test(fmt)) {
      fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (('00' + o[k]).substr(('' + o[k]).length)))
    }
  }
  return fmt
}


export const testMethod = function() {
	console.log("这是123五434")
}

